1440162121 has 4 divisors (see below), whose sum is σ = 1440238032. Its totient is φ = 1440086212.

The previous prime is 1440162103. The next prime is 1440162151. The reversal of 1440162121 is 1212610441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1440162121 - 2¹⁷ = 1440031049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1440162092 and 1440162101.

It is not an unprimeable number, because it can be changed into a prime (1440162151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18006 + ... + 56608.

It is an arithmetic number, because the mean of its divisors is an integer number (360059508).

Almost surely, 2^1440162121 is an apocalyptic number.

It is an amenable number.

1440162121 is a deficient number, since it is larger than the sum of its proper divisors (75911).

1440162121 is an equidigital number, since it uses as much as digits as its factorization.

1440162121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75910.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1440162121 is about 37949.4679936360. The cubic root of 1440162121 is about 1129.2856113175.

Adding to 1440162121 its reverse (1212610441), we get a palindrome (2652772562).

The spelling of 1440162121 in words is "one billion, four hundred forty million, one hundred sixty-two thousand, one hundred twenty-one".